Dispensing pump



Nov. 10,1925. 1,182

W. MORLOK v DISPENS I NG PUMP Filed Jan. 26. 1924 4 Sheets-Sheet l Nov. 10 1925. 1,561,182

- w. MORLOK DISPENS ING PUMP Filed Jan. 26, 1924 4 Sheets-$heet 2 mlh'am fir Nov. 10, 1925- w. MORLQK DISPENSING PUMP Fi1ed Jan. 26, 1924 4 Sheets-Sheet 4 Patented Nov. 10, 1925.

UNITED STATES PATENT OFFICE.

WILLIAM MORLOK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO L. A. PROU'TY COMPANY, INC., OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

DISPENSING PUMP.

Application filed January 26, 1924. Serial No. 688,674.

To all whom it may concern.-

Be it known that I, VV'ILLIAM MORLOK, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in a Dispensing Pump, of which the following is aspecilication.

My invention relates to new and useful improvements in a. dispensing pump and more particularly to that class of pumps used in restaurants for dispensing milk and the like by the glass.

The primary object of this invention is.

the provision of a pump which will agitate the liquid each time a quantity is dispensed as well as prior to the dispensing operation when the latter is desirable.

Another object of the invention is to so construct the pump that it will be sanitary in use and eliminate the chances of the liquid coming in contact with the person of the operator when the pump is removed from a receptacle.

Another object of the invention is to combine the outlet spout and cup valve in a uni tary structure and so mount such unitary structure that it will be actuated by the pump operating means while permitting it to be lifted manually for complete removal or to withdraw the lower end from the cup whereby the pump may be operated without dispensing any liquid.

A further object of the invention is to provide means for normally forcing the pump operating means in one direction, to provide adjustable means for limiting the movement of the operating means in the other direction whereby a predetermined quantity of the liquid will be dispensed at. each complete stroke of the pump and to locate the above referred to means in a housing at one side of the spout.

A still further object of this invention contemplates the locking or holding of the different parts in place by the coaction of said parts with each other thereby eliminating separate fastening devices.

Other objects which will become apparent from the description and claims include constructions to cause the centering of the different parts and a guide means which will automatically cause the outlet spout to always assume the same position when in operative condition.

The advantages of this invention, when used for dispensing milk, include a thorough mixing of the milk which eliminates the chance of one customer receiving milk rich in cream and another receiving milk having a. low percentage of cream, and this is accomplished prior to dispensing any of the milk as well as each time a quantity of the milk is dispensed; and the automatic emptying of the pump cup upon removal of the pump from the milk receptacle.

These objects are accomplished and the advantages obtained by providing a valve as a part of the outlet spout, which valve is normally held out of engagement with its seat in the cup and actuated by the opera tions of the pump or by lifting the spout independent of the pump operating means.

With these ends'in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains, may understand how to make and use the same, I will describe its construction in detail, referring by numerals to the accompanying drawings forming a part of this application, in which:

Fig. 1 is a side elevation of the dispensing pump embodying the invention, a portion thereof being broken away to illustrate the position of the valve when the pump is at rest.

Fig. 2 is a similar view at right angles to Fig. 1 showing the position of the parts after a partial stroke of the plunger.

Fig. 3 'is a side elevation the same as in Fig. 1 showing the position of the parts at the completion of the downward stroke.

Fig. 4C is a side elevation of the plunger or piston structure.

Fig. 5 is a similar view at right angles to Fig. 4:.

Fig. 6 is a plan view thereof.

Fig. 7 is a side elevation of the combined spout and valve.

Fig. 8 is a similar view at right angles to Fig. 7. V

Fig. 9 is a plan view of the pump.

Fig. 10 is an enlarged plan view of coupling between the operating mechanism and the piston structure.

. mg bushings.

Fig. 13 is a sectional elevation thereof.

Fig. 1 1 is enlarged end view of thevalve.

Fig. is a longitudinal section of the same. a

Fig. 16 is an enlarged section of the pump cup illustrating the relation of the inner or lower end of the spout thereof with the valve therein, the latter being in elevation.

Fig. 1'? is an enlar ed sectional elevation of the upper portion of the pump with the operating handle removed.

Fig. 18 is a detail section in the region of the line 1818 of Fig. 17 through the sleeve about the outlet spout.

Fig. 19 is-a similar view at the same point of the spout.

F ig, is also a like view at the same locality of both members in their cooperative relation.

Fig. 21 isan end view of the guide located within. the sleeve.

Fig. 22 is a side elevation thereof.

Fig. 23 is a side elevation of the arcuate member per so which forms the guideway.

In carrying out the invention as herein embodied, 2-irepresents the pump cup or cylinder having feet 3 to space the bottom wall t from the bottom of a suitable receptacle in which the pump. is to be used. The bottom wall of thecylinder or cup has a hole 5 therethrough preferably centrally located and this hole is surrounded by a valve seat 6.

At the upper end of the cup or cylinder 2 are a number of bosses 7 having sockets 8 for the reception of the lower ends of the uprights or stanchions 9 while the upper ends are set in the sockets 10 of the cover plate 11. This plate is adapted to be dis.- posed over the mouth or opening of the re.- ceptacle in which the pump is used and which hQlds the liquid to be dispensed.

The cover plate is provided with an out? ward'ly projecting centrally located cylindrical bearing 12 and an inwardly extending projection 13 having a beveled recess 1st in its inner face.

Slidably mounted in the bearing 12 is a sleeve 15 which projects through the cover plate and has a coupling 16 threaded on the lower end thereof. Said coupling 18 provided with acircumferential groove 1? for a purpose to be later described. A cross head 18 is fixed to the upper end of the sleeve 15 and to the upper cylinder 19 which telescopes over the lower cylinder 20, the latter having a closed lower end provided with a stud 21 for registration with an indent A cap 23 is threaded or otherwise removably nioiuited in the upper or outer end of the upper cylinder and carries a depending tube having its lower end contracted at 25 to frictionally engage the stop bolt 26 which, is threaded into the tube 24 for adustment to regulate the stroke of the operating mechanism by contacting with the closed lower end of the lower cylinder 20. This stop bolt is provided with means such as aslot 27 for the reception of a tool to readily manipulate the same.

Within the cylinders is a spring 28 surrounding the tube 24 having one end resting against the closedbottom of the lower cylinder as the stationary element and the other end in. engagement with a fixed ring 29 in the upper cylinder as the movable element, thus norm-ally forcing the upper cylinder upward or outward and carrying the sleeve 15 and other component parts with it. This upward or outer movement is limited or arrested by the contact of the coupling 1.6 with the recessed projection 13 on the underside of the cover plate.

lnthe sleeve 15 is a guide 30 which is fixed thereto so as to be practically an integral part thereof or provide a unitary structure and said guide comprises a vertical tongue 31 having a peaked upper end. 32 and inclined edges 33 adjacent its lower end toprovide a rest or stop.

An outlet spent 34 has a shank which passes through the sleeve 15, the cover plate and into the pump cup or cylinder 2. This spout is free to slide in the sleeve and be readily removable therefrom. On the shank of the spout outside of the sleeve is a collar 36 for ornamental purposes and to contact with the upper end of the sleeve or cross head to support the spout when the parts are in their outermost positions. On the spout shank intermediate its ends or on that portion normally within the sleeve is fixed an arcuate member 8.? which is practically an integral part of the spout shank or forms therewith a unitary structure. The adjacent edges of this member 37 are spaced apart to produce a guideway 38 for coaction and registration with the tongue of the guide 30 while the lower portions of said adjacent edges are inclined as at 39 for coaction with the peaked end of the tongue to provide a cam action and also for engagement with the inclined edges 83v of the guide to support the spout when the parts are in their outermost positions, either independently or in connection with the collar 36.

A bifurcated bracket 40 is carried by the cover plate in which is pivoted one end of the link 41 as at 42' while the other end of said link is bifurcated to receive one end of the operating handle or lever 13 at which point it is pivoted as indicated by 14. The operating handle or lever 43 projects between the sleeve 15 and upper cylinder 19 below the cross head 18 and is pivoted intermediate i-ts ends to the bifurcated depending bracket 45 as at 46. The outer free end of the operating handle or lever is shaped to provide a convenient hand hold 47.

The pivoting means for the different component parts of the operating handle or lever each includes a bushing 48 of such length as to project beyond the opposite sides of the pieces in which it is inserted and this bushing is internally threaded to receive a screw 19 at both ends which may be ambed against the ends of the bushing so as to prevent accidental displacement of the latter and as the screws do not fit tightly against the moving parts the chance of said screws becoming loose is reduced to a minimum.

In the lower end of the shank of the outlet spout is inserted the split stem 50 of the valve 51 so that the latter is frictionally held in the spout shank. This valve structure includes an imperforate plug 52 for coaction with the valve seat 6 in the pump or cylinder and above the plug portion are a plurality of inlet openings 53 leading to the valve chamber 54 which latter is in communication with the shank ot the outlet spout so that liquid may be forced out of the cup or cylinder through the inlet openings 53 and the outlet spout.

In order to force a liquid through the outlet spout from the pump cup or cylinder 1 provide a plunger or piston structure which includes a plunger or piston 56 snugly fitting within the pump cup or cylinder and this piston has a central opening 57 having a beveled upper end and is connected to apa-ir of parallel reach rods 58 while to said reach rods is also connected a head 59 having a hole 60 therethrough beveled at its upper end and said head includes an up standing flange 61 of substantially semi-circular shape the upper end of which is beveled as at 62 for coaction with the beveled recess 14 to cause said head to be centered so that the hole 60 therethrough will align with the bore of the coupling 16. From the flange 61 of the head extend an inwardly projecting rib 63 of the same shape as the upstanding flange thereby forming a groove (i l which registers with the lower portion of the coupling 16 when the rib 63 of the head registers with the groove 17 of the coupling thereby interlocking the parts so that they will move in unison. The opening 57 through the piston or plunger and the opening 60 in the head 59 are provided for the passage of the outlet spout shank 35.

iVhen the pump is in a receptacle from which milk or like liquids are to be dispensed and the same is at rest the parts are in the positions shown in Fig. 1 and at which time the plunger or piston 56 is slightly above the pump cup or cylinder and the valve 51 is out of engagement with its seat 6 due to the elevation of the cross head and sleeve with the guide 30 which support the spout and its component parts through the medium of the collar 36 and member 37. hen the liquid is to be dis pensed'the first movement on the operating handle or lever will cause the piston or plunger to enter the pump cup or cylinder and effectually close the top of said cup for the purpose of forcing any liquid therefrom. At the same time the downward movement of the parts will allow the spout to descend by gravity until the associated valve 51 en gages the seat 6 and thus close the opening 5 in the bottom wall of the pump cup to prevent any of the liquid being forced through said opening 5. As soon as the valve 51 engages its seat 6 the outlet spout by which said valve is carried comes to rest and any further movement of the operating handle will continue to move the piston or plunger downward or inward and cause the liquid within the pump cup or piston to be forced through the inlet openings 53 in the valve and out through the spout 34 as will be obvious.

During the downward movement of the operating handle the cylinder 19 is being telescoped over the cylinder to compress the spring 28 and as soon as the stop bolt 26 contacts with the lower closed end of the cylinder 20 said downward stroke will be stopped and since the bolt 26 is adjustable this downward stroke may be varied so that any given quantity of the liquid contained within the pump cup may be dispensed therefrom upon a single stroke of the piston by regulating said stop bolt.

Upon release of the pressure on the operating handle the spring 28 will be distended and return the operating mechanism to its normal position as shown in Fig. 1 and until the parts reach the points shown in Fig". 2 the valve in the pump cup remains closed so that any liquid remaining in the outlet spout will be drawn back into the pump cup or cylinder along with a certain amount of air which will be released as soon as the piston or plunger passes beyond the upper edge of the pump cup and the releasing of this liquid and air will tend to agitate the body of liquid within the receptacle in which the pump is used so as to keep said body of liquid thoroughly mixed. About the time the parts reach the positions shown in Fig. 2, the edges 33 oi the guide will engage the member 37 and the cross head 18 will engage the collar 36 so that during the last short part of the return stroke of the operating mechanism the spout will be lifted and the valve 51 disengaged from the seat 6.

If for any reason none of the liquid has been dispensed for some time and said liquid is for example milk, the fat or cream will have become separated necessitating the stirring of the milk prior to dispensing and 1t th1s is not done the customer receives a very inferior milk. In order to agitate the milk in the receptacle prior to dispensing the same the spout is manually lifted and held in a raised position with the valve and outside of the pump cup or piston then by operating the pump in the regular way the contents of the pump cup or piston will be forced therefrom through the opening 5 in the bottom of the cup as well as through the opening in the piston or plunger, thereby sutiiciently agitating the milk in the receptacle to again distribute the fats.

As soon as this false operation has taken place the outlet spout is released and allowed to return to its normal operative position so that on the next operation of the pump a quantity of the liquid will be dispensed.

As the outlet spout is allowed to descend and if for any reason the guideway 38 is not in line with the tongue of the guide 30 the inclined edges 39 of the arcuate member 37 forming the guideway will contact with the peaked end of the guide ton ue and produce a cam action which will rotate the outlet spout until the guideway 38 registers with the guide tongue so that said outlet spout when in an operative position will always project in the same direction and due to the length of the guide tongue the guideway will remain in cooperative relation thereto during any stroke that the operating mecl anisin can make.

With the ordinary present day pump it is necessary to empty the pump cup or cylinder by tilting the pump when the latter is to be removed from the receptacle holding the liquid, or the valve in the bottom of said cup must be opened. In the former opera tion the attendant ofttimes spills the liquid while in the latter operation the liquid is allowed to run over the attendants hand. Such actions are not only unsanitary but are uncleanly and disagreeable to patrons. In the present instance the opening in the bottom of the pump cup or cylinder being always open exceptat the time of the actual dispensing of the liquid and when the pump is removed from the liquid receptacle the contents of the cup will readily flow therefrom.

As the spring and its housing as well as the stroke adjusting means is in a separate barrel above the cover plate no milk or other liquid can enter the same and become sour or contaminated. The outlet spout being free for removal this can be readily cleansed and after said spout has been removed the head of the piston structure may be readily disconnected from the coupling and said piston structure removed for cleaning purposes leaving only the pump cup or cylinder to need sterilization which may be readily accomplished as it has no recess in which a substance may become lodged. lVhen it is necessary to clean the operating mechanism the coupling 16 is removed from the sleeve 15 andthe operating handleuncoupled from the link 41 at which time the sleeve may be withdrawn from its bearing and the upper cylinder will be removed from the lower one.

Of course I do not wish to, be limited to the exact details of construction as herein shown as these may be varied within the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is 1. In a device of the character stated, a pump superstructure, a cup, a spout slidably mounted in the superstructure with an end projecting into the cup and capable of being withdrawn therefrom, and means working in the cup to force the contents through the spout or out of the cup when said spout is withdrawn.

2. A dispensing pump including a cup, a cover plate, a plunger to force liquid from the cup, and a jspout slidably mounted in the cover plate, passing through the plunger and projecting into the cup whereby the liquid will normally flow through the spout, said spout being capable of, withdrawal from the cup to permit a movement of the plunger without forcing liquid through the spout.

3. In a dispensing pump, a cup having an opening in its bottom wall surrounded by a valve seat, and an outlet spout having a valve plug at its lower end for cooperation with the valve seat.

4-. A dispensing pump comprising a cup with an open-ing in its bottom wall, a valve seat surrounding said opening, a centrally apertured plunger slidable in said cup, a slidably-mounted spout passing through the aperture in the plunger and projecting into the cup, said spout having a limited. move ment with the plunger, and a valve at the lower end of the spout for cooperation with the valve seat when the plunger is moved to force liquid through the spout, said spout adapted to be manually withdrawn from the cup when the plunger is moved for liquid agitation purposes.

5. A dispensing pump comprising, in combination, a. cup having an opening in its bottom, a valve seatsurrounding the inner end of said opening, a cover plate, means connecting the cover plate and cup, an op erating mechanism supported by the cover plate, a plunger slidable in the cup and having an opening therei'hrough, means to connect the plunger with the operating mechanism, a spout slidably mounted in the operating mechanism and moving therewith for a limited distance, said spout passing through the plunger and projecting into the cup whereby liquid may be forced therethrough and adapted to be manually raised to withdraw its end from the cup to permit a non-dispensing stroke of the plunger, and

iii)

a valve carried by said spout for cooperation with the valve seat.

6. A dispensing pump comprising, in combination, a cup, a cover plate, means connecting the cup and cover plate, a plunger workable in said cup, a sleeve slidable in the cover plate. means connecting the sleeve with the plunger, a spout passing through the sleeve and the plunger and projecting into the cup and adapted to be manually lifted a limited distance to withd aw the end from the cup or lifted further for removal from the pump, and interengaging means on the spout and sleeve to center the spout.

7. The structure set forth in claim 6 in connection with a pair of telescoping cylinders, one of said cylinders resting upon the cover plate, a cross-head fixed to the other cylinder and to the sleeve, and a spring within the cylinders for normally forcing them apart.

8. The structure set forth in claim 6 in connection with a pair of telescoping cylinders, a stud carried by one cylinder to re; ter with an indent in the cover plate, a cross head fixed to the other cylinder and to the sleeve whereby they will move in unison, a spring within the cylinders to normally force them apart, a cap removably mounted in the outer end of said other cylinder, a depending tube carried by said. cup, and a stop bolt having threaded connection with the tube for adjustability in order to regulate the telescoping movement of one cylinder relative to the other, said stop bolt adapted to contact with the lower closed end of the first mentioned cylinder.

9. A dispensing pump comprising, in combination, a cup, a cover plate, means connecting the cup and cover plate, a plunger workable in said cup, a sleeve slidable in the cover plate, means connecting the sleeve with the plunger, a spout passing through the sleeve and the plunger and projecting into the cup and adapted to be manually lifted a limited distance to withdraw the end from the cup or lifted further for removal from the pump, a guide fixed to the inside of the sleeve and including a tongue having a peaked. end and provided with inclined edges at the base of the tongue, and an arouate member partially embracing the spout with its adjacent edges spaced to produce a guideway for registration with the tongue, said member also having lower inclined edges for coaction with the peaked end of the tongue to bring said tongue into registration with the guideway and to engage the inclined edges of the guide for supporting the spout.

10. In a pump of this character, a cover plate, a movable element passing through said cover plate, a lower cylinder having a closed bottom, a stud carried by the closed bottom of said cylinder for registration with an indent in the cover plate, an upper cylinder telescoping over the lowerone, means for normally forcing said cylinders apart, adjustable means carried by the upper cylinder for coaction with the closed bottom of the lower cylinder to regulate the telescoping action of the upper cylinder over the lower one, a cross head tin: d to the upper cylinder and to the movable element, and means connected with the cover plate and 7= cross head for reciprocating the movable element and the upper cylinder in unison.

11. In a pump of this character, a cover plate, movable element passing through said cover plate, a lower cylinder having a closed bottom, a stud carried by the closed bottom of said cylinder for registration with an indent in the cover plate, an upper cylinder telescoping over the lower one, means for normally forcing said cylinders apart, a cap 8 having threaded engagement with the outer end of the upper cylinder, a depending tube carried by said cap provided with an internally threaded portion and having a restricted lower end, a stop bolt threaded into said tube and frictionally engaged by a restricted end of the tube so as to be held in different adjusted positions, said bolt coacting with the closed bottom of the lower cylinder to regulate the stroke of the 1n0vable element in one direction, and means to reciprocate said movable element.

12. In a dispensing pump, the combiln tion of a cup, a cover plate, means for con: necting the cup and cover plate, a movable element passing through the cover plate, means to actuate said movable element, a coupling carried by the lower end of the movableelement and provided with circumferential groove, a piston structure including a plunger, a head and rods connecting the plunger and head, said head having a substantially semi-circular rib for regis tration with the groove in the coupling, and a spout passing through the movable element, the coupling and the piston structure for holding the parts together while acting as an outlet from the cup.

13. A dispensing pump of the class mentioned comprising, in combination, a cup provided with a bottom wall having an opening therethrough, a valve seat surrounding the upper end of said opening, a cover plate provided with an outwardly projecting bearing and further having a depending recessed projection, a sleeve passing through the cover plate and slidably mount ed on the bearing, a grooved coupling removably mounted on the lower end of said sleeve, a plunger slidable within the cup and normally resting above the upper edge thereof, rods connected to the plunger, a head connected to the upper ends of said rods, a substantially semi-circular flange forming a part of the head and having its upper edge beveled for coaction with the beveled recess of the depending projection on the cover plate, a rib carried by the flange for registrationwith the groove in the coupling, an outlet spout including a shank loosely fitted in the sleeve and projecting through the plunger into the cup and adapted to follow the movements of the plunger for limited distances, said spout also adapted to be manually raised to withdraw its end from the cup when it is desired to give a false movement to the plunger, means to center the spout whereby its outlet end will always project in the Sit-111G direction when in opera tive position, a valve having a split stem for insertion in the lower end of the spout Where it is frlctional'ly held in posltion, said valve including a valve plug for coactlon with the seat in the pump cup and having holes-leading to the interior of the stem which is in coi'innuni'cation with the spout, a pair of telescoping cylinders located in spaced parallelism with the sleeve with one of said cylinders resting on the cover plate, a cross-head fixed t0 the other cylinder and to the sleeve, means within the cylinders for \VILLIAM MORLOK. 

